British Standards Document
BS 9250
Code of practice for design of the airtightness of ceilings in pitched roofs

https://doi.org/10.3403/30137889U

BS 9250 is maintained by B/542/1. The current release of this standard is:

BS 9250:2007 Code of practice for design of the airtightness of ceilings in pitched roofs

https://doi.org/10.3403/30137889 (published 31/05/2007)

This standard is available from the following sources:

Other historical versions of this standard document also exist: